COCO
2005
Springer
14 years 2 months ago
2005
Springer
We show that the Multicut, Sparsest-Cut, and Min-2CNF≡ Deletion problems are NP-hard to approximate within every constant factor, assuming the Unique Games Conjecture of Khot [S...
APPROX
2005
Springer
14 years 2 months ago
2005
Springer
We introduce a “derandomized” analogue of graph squaring. This operation increases the connectivity of the graph (as measured by the second eigenvalue) almost as well as squar...
MOBICOM
2006
ACM
14 years 3 months ago
2006
ACM
In this paper we study the broadcast capacity of multihop wireless networks which we define as the maximum rate at which broadcast packets can be generated in the network such th...
WADS
2007
Springer
14 years 3 months ago
2007
Springer
An approach for reducing the navigation effort for the users of a web site is to enhance its hyperlink structure with additional hotlinks. We address the task of adding at most on...
ESA
2007
Springer
14 years 3 months ago
2007
Springer
In real systems, such as operating systems, the scheduler is often unaware of the remaining work in each job or of the ability of the job to take advantage of more resources. In th...
LATIN
2010
Springer
14 years 3 months ago
2010
Springer
We consider the multiplication of a sparse N × N matrix A with a dense N × N matrix B in the I/O model. We determine the worst-case non-uniform complexity of this task up to a c...
CSR
2009
Springer
14 years 3 months ago
2009
Springer
Abstract. In 1992, A. Hiltgen [1] provided the first constructions of provably (slightly) secure cryptographic primitives, namely feebly one-way functions. These functions are pro...
WWW
2010
ACM
14 years 4 months ago
2010
ACM
Spearman’s footrule and Kendall’s tau are two well established distances between rankings. They, however, fail to take into account concepts crucial to evaluating a result set...
WWW
2007
ACM
14 years 10 months ago
2007
ACM
As XML database sizes grow, the amount of space used for storing the data and auxiliary data structures becomes a major factor in query and update performance. This paper presents...